Hello and welcome to London Multiplayer Mod 1.0 This mod, created by Mariuswww and BMA takes place in the center of the English capital, London.Here you are given the command of three urban fire stations, two ambulance stations and a police station. The mod features many realistic London Vehicles and fire stations are made as close to the real deal, as we can. In total, this mod allows you to take contol over 32 emergency vehicles and 10 different types of personnel. All vehicles can easily be added to each station with the custom Activate Station script created for the mod. It is also possible to call each vehicle out from the station using the call vehicle command given to each vehicle at the station. The mod also includes three different sirens for each vehicle, limited water, Automatic Fire Alarms, Gated Wye and Parking. And best of all! All this actually works in multiplayer and released!

Well, there is two way (AFAIK), 1st, you can load the mod in the editor, then load the freeplay map. Press F9 (or is it Shitf + F9 can't recall) in that menu you should be able to toggle snow on/off. 2nd way is to edit the map texture, adding a white layer ontop of streets etc, although this requires you to have the map texture and is quite more complicated than the 1st way.